The Corvette Z06 Class Action Suit Clarified

The LS7 motor in the C6 is really a great engine, it should give you trouble free service for the life of the Car. There were some reports on the various corvette forums of people who modified there engines running into issues. The reality is any time you start adding blowers, nos, cams etc, to a care that wasn't designed for it your going to shorten the life of the engine. Should you start taking this tricked out card to the track or strip your going to break stuff.

The lawsuit is alleging the new ZO6 with supercharged engine suffers from too much heat soak and degrades on track performance. Super charged and turbo charged cars are more sensitive to heat soak than there naturally aspired counter parts. The C6 zr1 used a similar endings to the c7 zo6 and that engine was know to suffer from heat soak degradation of performance. That is why the C6 often posted better or similar tracks times to the much more powerful ZR1.

It's going to be an uphill battle I suspect for this lawsuits, the reality is going to be an uphill battle. The vast majority of Z06's never see track time, this was true back when the Z06 was more track orientated and it's even more true now that you can get automatic and convertible zo6'S. This issue is something that happens on the track and would be hard to replicate on the road. Generally, when vehicles fail to perform off road, the purchaser has little recourse.

I've got an '09 Z06 with 15,000 miles and I'm freaking out about all the news I'm hearing about valve guide issues. Like everyone else, I paid a ton of money for my dream car and if there's a problem with it, then damn it, I expect GM to repair it. I have a Vette performance shop here in Maryland and they are the one's who informed me of the valve guide issue. Like some of the other posters, what can we do to join the class action lawsuit? If GM suspects this problem is related to engine alterations (blower, cam, etc. install), then what about those of us who haven't done this? If I take my car to a validated/certified Corvette service provider and they detect problems after removing the heads, on an engine with no modifications, GM should foot the freak'n repair bill. What do I have to do to join the lawsuit? What's the name of the firm?

The valve guide issue is completely unrelated to the C7 heat soak issues.

There is a small amount of C6 ls7 cars that have an issue with the valve guide, this issue was caused by a a maching error at the supplier of the heads. If your not experiencing noise than you don't have the heads that were machined incorrectly. If need peace of mind take you car to your chevy dealer and let them inspect it.

Always be careful what you read online, the internet has a way of making small issues seem big. A few years back people online were taking a certain truck off road and the aluminum front differential was cracking, if you listened to these few guys you would be convinced your differential was going to spontaneously exploit while parked.

I bought one of "those" trucks, and my uncle in law mechanic first thing he says to me is "you know those trucks have weak front ends" I just laughed 200k miles later of heavy work on the farm and not a sign of cracks.

Enjoy you zo6 it truly is a dream car.

I have a 07 ZO6 , with 14500 miles all bone stock last week the engine started ticking then locked up,I took it to my dealer they told me $15,500.00 to replace the engine, this is totally unacceptable , I paid a lot of money for a low milage
car and this is what I get, GM needs make this right and recall these engines !!!!!

The same thing that happened to everyone here just happened to me also. 07 Z06. 48k miles. Valve broke under normal driving conditions, thus lawsuit needs to happen!

I have a 2006 Z06. Does anyone have any input as to where the lawsuit stands on the valve guide issue? Is it still progressing? Is there some one to contact to join the suit? Any facts concerning this would be very much appreciated.

I own a 2007 z06 and bought it brand new and wonderinf if i need to sell it since i keep hearing about this but i have no problems so far about valve issues and it has 19k miles on it . I did add a supercharger to it two years ago but mostly for show and tell .

i boutght a 2007 z06 when it was brand new and still own it and was wondering was it time to sell it before it drops valves and causing wrecks? i dont have this issue as if yet but still wonder if my car is still in this mess with the valves.

Since the valve problem with the Z06 stems from a supplier milling the heads a few thousands of an inch off, GM must know exactly when these misaligned heads were supplied and when the error was discovered and corrected. The VIN numbers of the affected cars has to be known. Why can't this info be supplied? I have tried contacting GM, but I get nowhere. Any suggestions?

I have owned a 2006 Z06 for almost two years. The car is now daily driver and has 38,000 miles on it. I have no valve noise, although I am considering having the heads/valves done. It just seems like a gamble. Does anyone have an estimate of the percentage of these cars that have experienced serious valve issues? I'm guessing the percentage is small, otherwise my car would be worth squat on the used-car market--and that is not the case.

How do i join this lawsuit?
Bought 2007 z06 427 put 1100 miles ...threw rod through engine car sits dead no help now for 5 years have to pay for a non running car. Please help me.

Glad I found this board...this solidifies it for me...no Z06 for me. Will have to look for a Grand Sport drive knowing the LS3 won't grenade on me under normal driving conditions.

My 2008 zo6 engine just seized. Who do I contact to file suit against gm?

A valve dropped in my 2006zo6, $10,000.00 dollar later and 200 miles and the same cylinder is leaking antifreeze. Now it is back at the GM dealer. I would like to join the lawsuit if it is still possible because now I am looking at $15,000.00 more to fix the car. When it was fixed the first time they assured me the block was ok and they recommended I have the other head redone, which I did. I am not happy at all.

Don't believe anyone who says "only modifieds" because that is utter bullcrap. All stock 15k miles valve dropped on the interstate and windowed my block, completely unmodified. Luckily I was able to coast off the side without getting hit but it could have been very bad. . Knew a guy who had not 1 but 2 engines blow on him. It is a MAJOR problem. Everyone who works on or knows anything about the LS7 knows its a real issue. There is a way to replace the valves and align everything I believe that delays the problem, but doesn't solve it. Count me in on the class action as well, would love to get the $15k back I lost when it bit the dust. Unfortunately I didn't have enough money to put a crate motor in it and had to sell it as a roller. Too bad still my favorite car to drive (when it wasn't blowing up) that I ever owned.

I would like to join the class action lawsuit. My 2006 Z06 had a catastrophic failure this past week and blew out the bottom block. The car has only 24k miles on it. I took the car into Chevy and they reported, “cars sodium filled exhaust valve broke causing piston detonation and debris found throughout the engine and rotating parts damaged block causing internal coolant leak and external oil leak”. They followed up with some photos and an article titled, “Like an Annoyed Octopus, Another LS7 Eats Itself - Engine Labs”. This is very disappointing. I have a meeting with them tomorrow at 1pm to discuss the material provided.

Very concerned about what I'm reading here.. I have a 2007 Z06 with 83,000 miles. Just learned I need a new clutch, pressure plate, throw bearing, and mater cylinder. $4,100 now the thought of an engine failure really has me worried.

Have a 2008 Z06 that has 56,000 miles and just dropped a valve, putting a connecting rod out the side of the block. Chevy dealer wants $23,000 to repair. Numerous calls to GM fall on deaf ears. They say they know of no valve train problem and refuse to give any help at all. How do I join the class action?

Number 5 cylinder on my 2008 Z06 dropped an exhaust valve. The valve head bounced off the piston twice and lodged back inside the exhaust port cracking the piston and scaring the sleeve. Dealership determined block was good and re-honed cylinder and replaced heads for $8,500. 2 days of driving the engine starts overheating and losing coolant, (later found to be hairline crack in cylinder sleeve) so I shut down the car again and contacted dealer. They wanted another $5,000 to pull the heads and re-inspect. I ended up buying a new block from Colorado Speed that was built by Scoggin Dickys, (Another $6,500) and had the new heads from the dealership installed since they had only 2 days on them (which cost an additional $7,800 to swap the engine). The car has been running great until last month which comes to around 7,000 miles and I again have valvetrain noise and rough running. I picked up a set of Trick Flow heads and had them swapped for another $5,400. The car runs perfect now with no noise... for another $32,000 on top of the $80,000, I finally have a 08 Z06 that is what it should have been from the dealer. Yeah, where do I sign up for the suit?

I owned a 2006 Z06 and in June 2/2011 my motor blew up. Cracked the block. 37,000 miles. GM will not take responsibility for this and I have access to 100’s of people and motors that did the same thing. Please contact me and I’ll get ALL OF MY INFORMATION TOGETHER AND GM WILL HAVE 100’s of Z06 motors that were defective. I want in on this class action law suit bc I lost my car. My block cracked and I had 37,000miles on my car and GM ACTED COMPLETELY STUPID ABOUT THE PROBLEMS WITH THE 7.0 ltr. 427.
GM needs to pay for all damages and I was out of town and stuck on the side of the road for 4 hours and it was extremely hot and I had no access to water or anything.

I own a 2007 Z06 with 13,000 mi. and once I heard about this valve issue I knew I had to find out if I had one of the defective engines before driving it any further. So I did my reseach and being as mechanically inclined that I am, I decieded to perform the valve test myself which in fact I finished today and am sorry to say that I do not have good news. I perform the test on cylinder number one first and after removing the valve springs and valve seals, I could easily, just by touch, tell that the exhaust valve guide clearance was way out of specs when in comparison to the intake valve which is supposed to be at the same clearance. I'm going over to a Chevy dealership later this week to talk to a service manager to see if they're willing to do anything about this considering I can show them proof that my engine is defective and is completely stock.

I have a 2007 Z06 with only 27k miles and yessssss at 20k miles my LS7 had a problem with my engine so I went to Texas speed and $7,000 im back on the road

My 2006 c6 z06 dropped valve at 16,000 kms what a joke.

Anything new on what's going on if anything with this purposed lawsuit or GM's willingness to fix this potential issue with the C6 Zo6 valve issue?

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